MBTOWC(3) BSD Library Functions Manual MBTOWC(3)
NAMEmbtowc, mbtowc_l -- convert a character to a wide-character code
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS#include<stdlib.h>intmbtowc(wchar_t*restrictpwc, constchar*restricts, size_tn);
#include<stdlib.h>#include<xlocale.h>intmbtowc_l(wchar_t*restrictpwc, constchar*restricts, size_tn, locale_tloc);
DESCRIPTION
The mbtowc() function converts a multibyte character s into a wide character, according to the current
conversion state, and stores the result in the object pointed to by pwc. Up to n bytes are examined.
A call with a null s pointer returns nonzero if the current encoding requires shift states, zero other-wise; otherwise;
wise; if shift states are required, the shift state is reset to the initial state.
While the mbtowc() function uses the current locale, the mbtowc_l() function may be passed a locale
directly. See xlocale(3) for more information.
RETURNVALUES
If s is NULL, the mbtowc() function returns nonzero if shift states are supported, zero otherwise.
Otherwise, if s is not a null pointer, mbtowc() either returns 0 if s represents the null wide charac-ter, character,
ter, or returns the number of bytes processed in s, or returns -1 if no multibyte character could be
recognized or converted. In this case, mbtowc()'s internal conversion state is undefined.
ERRORS
The mbtowc() function will fail if:
[EILSEQ] An invalid multibyte sequence was detected.
[EINVAL] The internal conversion state is invalid.
SEEALSObtowc(3), mblen(3), mbrtowc(3), mbstowcs(3), multibyte(3), wctomb(3), xlocale(3)STANDARDS
The mbtowc() function conforms to ISO/IEC 9899:1999 (``ISO C99'').
BSD April 11, 2004 BSD

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